The Zero-Sum Original Anthology Series features themed oneshots from various mangaka that publish in Ichijinsha's Zero-Sum and Ward magazines. Volume 10 theme: Conflict and Secret Societies.

1. Ranpo-sensei Laughs Like This by Takayama Shinobu
2. Secret Mission by Saeki Yashiro
3. Fang by Kawazoe Mariko & Nakamura Sachiko
4. Black Swastika Army by Katagiri Ikumi
5. Mushroom and Kappa - A Fierce Conflict of Honourable Men by Magami Guriko
6. Boys’ Cavalry by Kayase Shiki
7. Rindou by Asada Yasuka
8. Hideout by Sekka
9. Un Orso by Mizuhara Kenta
10. Be Enthusiastic, Father! by Inui Miku
11. A Promise by Seno Tatsune & Takamiya Aya
12. Let’s Meet at the Secret Society by Kinoshita Sakura
13. Will O' the Wisp by Kouzuki Leo
14. The Village of the Secret Agreement by Ueda Shinshu
15. At the End of an Endless Desire by Akai Higasa
16. Demon King Time by Kanou Ruri
17. Messenger of Justice ★ Moonlight Organisation by Usaki Hitomi

Yuuta kept being sex friends with Souichi, his big brother’s friend, due to his long-running unrequited love. But their relationship becomes painful for Yuuta after he starts suspecting that Souichi is in love with his big brother.

Sydney lawyer Jason Lombard is a ten on the male Richter scale in every superficial sense. He also seems unable to even look past Sophie's hair, which is a bit... well... flamboyant at the moment. She suspects her days as his new assistant are numbered.

But when Sophie discovers the cad only hired her as a distraction for a case he's working on, Mr. Snob finds himself on the receiving end of a temper as hot as her hair. A truce reached, now they're headed for Bora Bora, where things are bound to get even hotter!

Ashida Mamoru is a god-tier manga assistant but his habit of turning authors lazy has left him without a job. Luckily one of his classmates from university happens to have a little sister who is a serialised manga author in need of an assistant.

Four years ago, Kate lost her beloved brother, her only remaining family. To exacts her revenge on Aidan, the man who drove her brother to his death, she attends his wedding and messes up the ceremony by claiming to be his wife. But Kate was mistaken—the man she truly wanted revenge upon was Aidan’s twin brother!

Mitsuhiro Kojima is a 18 year old highschool student without a dream. One day, he'd bump into his classmate, Hinae Nakanojou, giving him something to do with his life.

Together with Nakanojou, Kojima tries to help their manager, Mari Komiya, in making her business stay afloat. Tending customers, petting non-existent cats, and doing odd jobs. Follow their adventure in this cute, and sometimes dramatic story of cat-themed cafe'ing.

Akito wants the stereotypical isekai experience and so he summons himself to another world, however things don't quite go as planned. He's the same unskilled loser that he was before. He can barely scrape together enough money to eat. One day a cute girl approaches him with a contract to join her party. He can't read what it says, but ends up being forced to sign it anyway. What's the worst that could happen?

The Teenage Mutant Ninja Turtles (often shortened to TMNT or Ninja Turtles) are a fictional team of four teenage anthropomorphic turtles, who were trained by their anthropomorphic rat sensei in the art of ninjutsu and named after four Renaissance artists. From their home in the storm sewers of New York City, they battle petty criminals, evil overlords and alien invaders, all while remaining isolated from society-at-large.

A father-con and a daughter-con reunite after six years and try their best to be honest with their feelings.

When Ume was five years old, he fell in love at first sight with his next-door neighbor, Hara-chan. From then on, 20 years has passed, and Ume has found himself becoming a sex friend of his unrequited love. However, Hara-chan’s actions and feelings towards Ume have slowly become even more confusing??

"Bard, make sure you don’t get touched by it." This is bad, I must stay away from him quickly—. Although he shouldn’t be touched by the albino omega, his whole body which has begun to pulse, & can’t be stopped anymore…?! Bard, an alpha beast man who adores the King and spends his busy days as a crown prince, reunites with Maya, a pure white and beautiful half-beast who couldn’t be forgotten since he saw him once when he was young.

Times continue to grow worse as criminals go after little girls. The police are always too late or keep losing their target. Who will protect the happiness of little girls?! A half-naked, bird mask wearing, NEET, lolicon will. An ally of justice! A phoenix that will protect the little girls from perverts, molesters and degenerates that lurk the neighborhood!

This is the adaptation of the award winning doujin novel that shocked Japan and sold over 130,000 copies within a month. It even outsold Haruki Murakami's long awaited novel, 'Killing Commendatore' domestically.

While in the manga, it claims that it's just a work of fiction, the press release for the book by Fushosha, the publishing company, says (and I quote) "'Otto no Chinpo ga Hairanai' is a shocking true tale that tells the story of a woman's life". It's about her relationship with school, society, men and women. It's about a woman that struggles with the curse that's 'normalcy', her struggle with impotence, cheating, and all that in between.

Comicalized by Gouto Yukiko (36-do, R-chuugakusei), a story of despair and hope, dedicated to all the people who have difficulty living, begins now.

I Saw It is a biographical piece following the life of Nakazawa from his youngest days in post-war in Hiroshima up until his adulthood. I Saw It became the predecessor for Nakazawa's popular manga series Barefoot Gen.

'Creepy Side', is a creepy and eerie neighborhood. A series of tragedies mixed with black comedy in this town begins!

This is a story about the romantic relationship between Wako, an OL who works for a publishing company and is dating a genderless man who has the perfect makeup, clothes, hair and nails. It depicts their daily lives between a boyfriend who only aim is to be beautiful for her.

Gold, a witch hunter, who had been mistaken as the witch’s servant for the red hood he wears is attacked by wolves. Realizing that they are also targeting the witch, Gold calms down the werewolf, Fen, apologizing for the misunderstanding. Teaming up to kill the witch, Gold kisses Fen, by doing so he is able to absorb his healing ability. Fen is furious , but it is a journey where they live a life to conquer together. If Gold gets injured, all he needs to do is take body fluids from Fen.

Werewolf x Hyperbolic Little Red Riding Hood.

The way of the witch killing journey is ─ ─ !?

My unforgettable man for the rest of my life.

Bambi is a human being that can "transform into a bear" when angry. When he was in elementary school, he kept himself from transforming after he knew the secret of the beast species. He met Ookuma who was the reason for his first time turning into a bear! Tormented by Ookuma, Bambi gets angry or sad ... the emotions he was suppressing were overflowing.

"I hate you!"

Although he thought that ... he saw the appearance of Ookuma, who was laughing with a broken heart and Bambi's emotions become a figure of a bear!

A man who does not dress well × Tsundere Beastman.

Naji is an ordinary cat who lives in a small village. His occasional mischief caused by his selfish personality lands him in trouble from time to time. One day, Naji ate the sacrificial offering, the Shrimpfish meant for the monster Taowu, who laid waste to the village many years before. To atone for his crime, he is entrusted with the mission of finding another Shrimpfish. However, the legends whisper… All cats who eat the Shrimpfish are destined to become monsters.

This is a story of Ikuma and Sumika, two childhood friends who recently got married and started a brand new life together. At first sight, they seem like a happy couple with nothing to worry about, there is one problem: they have trouble having sex together. With both of them having zero prior experience, this awkward couple tries their best(?) to figure out together how to do it for the first time.